Shimano BT-R1A External Di2 Battery 2.5mm/5mm/10mm/20mm Tooth Count 46 Drivetrain Speeds

Tooth Count 46 Drivetrain Speeds 12 Defined Color Black Ring Position/Type Outer Chainring BCD 107 Color Black Material Aluminum keyword search Rival AXS

V8 (QTY 1)

Model Metro Plus 680 Headlight Lumens 680 Modes 8 Rechargeable Yes Color Black Weight 140g

Color Stealth Defined Color Black Gender/Age Adult Pad Type Reactive Polymer Protection Area Elbow Size X-Large

Z-shape retro top plate provides additional clearance for front derailleur cables

Shimano BT-R1A External Di2 Battery 2.5mm/5mm/10mm/20mm Tooth Count 46 Drivetrain SpeedsShimano BT R1A External Di2 Battery. Shimano Di2 Batteries. Must purchase battery charger and power cable to complete the system. All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions Use Di2 system checker to update component firmware from http: e tubeproject. shimano. com TECH SPECS Shifter Derailleur Compatibility Dura Ace 7970 Di2 Shifter Derailleur